• 제목/요약/키워드: wet treatment

검색결과 790건 처리시간 0.028초

Effect of wet treatment on the structure of various silkworm strain cocoons with different rearing seasons

  • Lee, Hye Gyeoung;Bae, Do Gyu;Um, In Chul
    • International Journal of Industrial Entomology and Biomaterials
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    • 제44권1호
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    • pp.4-11
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    • 2022
  • In this study, cocoons from different silkworm strains and rearing seasons were collected and immersed in water at elevated temperatures to investigate the effect of a wet treatment on their morphology and crystallinity. Untreated cocoons exhibited different crystallinities depending on the silkworm strain and rearing season; however, no distinct changes in their morphological structure were observed. Furthermore, after wet treatment, the differences in the crystallinities of cocoons disappeared. In addition, wet treatment of degummed silk (i.e., fibroin) did not change its crystallinity. These results indicate that different crystallinities of the untreated cocoons collected from various silkworm strains and rearing seasons are due to the different characteristics of sericin in the cocoons.

Wet Cupping (al-hijama) for Mental Health: A Systematic Review

  • Ucun, Yasemin
    • Journal of Acupuncture Research
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    • 제39권2호
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    • pp.89-95
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    • 2022
  • This systematic review aimed to evaluate the effects of wet cupping on the treatment of mental illness. A total of 2,670 studies were retrieved using PubMed, Cochrane Library, Web of Science, Google Scholar, and Science Direct databases, and of these, 2,661 were excluded due to not meeting the inclusion criteria. There were 9 articles included in this review including 1,124 individuals who received wet cupping. Mental health was explored in, those who had migraines, metabolic syndrome, smoking addiction, post-traumatic stress, chronic medical disease, and depression. As an intervention procedure, the triple S technique was used in all studies. Only 3 studies reported that none of the participants complained of adverse events during or after the cupping therapy. In all studies, wet cupping was reported to be effective in reducing psychological symptoms. However, there are few randomized controlled trials testing the e?ectiveness of wet cupping in the treatment of mental health, and most are of poor quality. Therefore, more rigorous studies are required before the effectiveness of wet cupping for the treatment of mental illness can be determined.

Effects of wet treatment conditions on the crystallinity and morphology of outside of silkworm cocoons

  • Kim, Yeon Jin;Kweon, HaeYong;Um, In Chul
    • International Journal of Industrial Entomology and Biomaterials
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    • 제43권1호
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    • pp.22-28
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    • 2021
  • Natural nonwoven silk fabric has attracted researchers' attention owing to its unique properties as a biomaterial. It is fabricated by reeling, wetting, and hot pressing natural silk filament from silkworm cocoons. In this study, silkworm cocoons were immersed in water at different temperatures for various durations to examine the effects of wet treatment on their crystallinity and morphology. As the treatment temperature and time increased, the cocoon's silk filament separation became more evident, and fibroin strands were observed in it. The crystallinity indexes of the silkworm cocoons increased until a treatment time of 2 h and remained constant thereafter. The increase in the crystallinity index using wet treatment was enhanced by increasing the treatment temperature. Although the weight loss of the silkworm cocoon was insignificant until 40℃, it was appreciable above this temperature, and the degree of weight loss constantly increased with increases in the treatment temperature and time.

퀴놀린 폐수의 습식산화와 호기성 생물학적 통합처리 (Integrated Wet Oxidation and Aerobic Biological Treatment of the Quinoline Wastewater)

  • 권순석;문해미;이용학;유용호;윤왕래;서일순
    • KSBB Journal
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    • 제23권3호
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    • pp.245-250
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    • 2008
  • 퀴놀린은 생물학적으로 거의 산화 분해되지 않았으나, 250$^{\circ}C$ 습식산화에서 니코틴산과 초산 등으로 산화 분해되었다. 퀴놀린 습식산화는 균일촉매 $CuSO_4$ 또는 쉽게 습식산화 분해되는 페놀에 의해 반응조건이 완화되었다. 퀴놀린 습식산화 반응의 주 생성물 중 하나인 니코틴산은 호기성 Bacillus 종균에 의해 산화 분해되었다. 촉매를 사용하지 않은 고온에서의 퀴놀린 습식산화 생성물의 생물학적 산화는 저온에서 진행된 균일 촉매 ($CuSO_4$) 습식산화와 퀴놀린-페놀 혼합용액 습식산화 반응 생성물의 생물학적 산화에 비하여 늦게 진행되었다. 반면에, 호기성 균주의 습식산화 생성물에의 적응은 생물학적 처리에서의 니코틴산 산화 분해 반응의 지체기를 크게 단축시켰다.

고농도 페놀 폐수의 습식산화와 호기성 생물학적 통합처리 (Integrated Wet Oxidation and Aerobic Biological Treatment of the Wastewater Containing High Concentration of Phenol)

  • 최호준;이승호;유용호;윤왕래;서일순
    • KSBB Journal
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    • 제22권4호
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    • pp.244-248
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    • 2007
  • 고농도 페놀폐수 전처리 습식산화공정의 반응온도, 초기 pH 및 균일촉매 ($CuSO_4$) 등이 후처리 호기성 생물학적 공정에 미치는 영향을 조사하였다. 습식산화에서의 높은 반응온도와 산성 초기조건이 후처리 생물학적 산화공정에서 높은 산화속도와 최종 COD 제거율을 유발하였다. 습식산화에서 균일촉매를 사용하면 전처리 습식산화반응은 낮은 반응온도에서도 높은 COD 제거속도를 보였으나, 후처리 생물학적 산화공정에서는 낮은 최종 COD 제거율을 나타내었다.

흰쥐의 자궁에 대한 Tamoxifen과 성스테로이드 호르몬 상호작용에 관한 연구 (Studies on Interaction of Tamoxifen with Sex Steroid Hormones in Rat Uterus)

  • 한호재;양일석;권종국
    • 한국수정란이식학회지
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    • 제3권1호
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    • pp.13-23
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    • 1988
  • These studies were undertaken to examine the interaction of tamoxifen with sex steroid hormones in rat uterine activity. The uterine wet weights of the immature Tat uterus were examined after the administration of estradiol-l7$\beta$(1$\mu$g), tamoxifen(50$\mu$g), progesterone(lmg). The uterotropic activity in immature ovariectomized rats was observed under various treatment conditions following pretreatment with above drugs. The results obtained were as follows:1) Tamoxifen produced significant increase (p <0.01) in uterine wet weight compared with control group, although the increase was not as great as that seen with estradiol-17$\beta$. Administration of estradiol-17$\beta$ together with tamoxifen inhibited significantly the increase of uterine wet weight by estradiol-17$\beta$ (p < 0.01). Coadministration of progresterone with tamoxifen partly blocked the increase of tamoxifen-induced uterine wet weights by progesterone. 2) Estradiol-17$\beta$after the estradiol-17$\beta$ pretreatment discontinued the declining uterine wet weights due to the absence of estrogen support, but uteri continued to increase in weight if daily estradiol-17 $\beta$ was maintained. Administration of tamoxifen on the fourth day of estradiol-17$\beta$ treatment reduced uterine wet weights within 24 hours, and the weights continued to decline with additional tamoxifen. 3) The modest growth of the uterus induced by three daily injections of 5Opg tamoxifen remained stable for five days, with or without additional tamoxifen treatment. Coadministration of tamoxifen with estradiol17$\beta$ increased slightly the increase of uterine wet weight by tamoxifen. Coadministration of tamoxifen with progesterone inhibited the increase of uterine wet weight by tamoxifen. 4) The modest growth of the uterus induced by three daily injections of lmg progesterone reduced uterine wet weight to the control level for five days. Commencement of tamoxifen or estadiol-17 $\beta$ injections on the fourth day of progesterone treatment rapidly elevated uterine wet weight.

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Performance evaluation of nitrate removal in high TDS wet scrubber wastewater by ion exchange resin with dissolved air flotation (DAF) process

  • Kim, Bongchul;Yeo, Inseol;Park, Chan-gyu
    • Membrane and Water Treatment
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    • 제13권1호
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    • pp.1-6
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    • 2022
  • The regulations of the International Maritime Organization (IMO) have been steadily strengthened in ship emissions. Accordingly, there is a growing need for development of related technologies for the removal of contaminants that may occur during the treatment of SOx and NOx using a wet scrubber. However, this system also leads to wastewater production when the exhaust gas is scrubbed. In this research, we evaluated the performance of an ion selective resin process in accordance with scrubber wastewater discharge regulations, specifically nitrate discharge, by the IMO. Accelerated real and synthetic wastewater of wet scrubbers, contained high amounts of TDS with high nitrate, is used as feed water in lab scale systems. Furthermore, a pilot scale dissolved air flotation (DAF) using microbubble generator with ion exchange resin process was combined and developed in order to apply for the treatment of wet scrubber wastewater. The results of the present study revealed that operating conditions, such as resin property, bed volume (BV), and inlet wastewater flow rate, significantly affect the removal performance. Finally, through a pilot test, DAF with ion exchange resin process showed a noticeable improvement of the nitrate removal rate compared to the single DAF process.

조석수동역학 모의에서 조간대 침수-노출 고려효과 비교연구 (Comparative Study for dry-wet Treatment Effect in a Tidal Hydrodynamic Simulation)

  • 서승원;김정훈
    • 한국해안해양공학회지
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    • 제15권2호
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    • pp.97-107
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    • 2003
  • 서해연안에 발달된 조간대의 효과가 수치모의에 미치는 영향을 평가하기 위하여 유한요소 조석수동역학 모형인 ADCIRC에 침수-노출을 적용하여 금강하구와 전북해역에서 특성을 살펴보았다 전북해역에서 관측조류와 비교한 결과 RMS오차 분석으로 대조 시 1cm/sec 정도로 최대 조류속 대비 3% 이내에서 매우 잘 일치하고 있으나, 침수-노출 처리의 장점이 크게 부각되지 않는 것으로 나타났다. 금강하구에 대한 조량 평가는 조간대의 침수-노출 영향이 대체로 5%내외에서 국한되지만 인근 특정 단면에서는 20% 이상의 차이를 보인다. 조석 잔차류 비교 평가에서 조간대 고려 유무 영향이 거의 나타나지 않으며, 전체적으로 조석수동역학 해석결과에 미치는 효과는 미미한 것으로 분석되었다. 조간대의 침수-노출 고려 유무는 연구목적에 따라 달리 취해야 되겠지만, 장기간의 확산모의와 결합되는 경우 등에는 조간대의 노출을 고려하지 않아도 충분할 것으로 판단된다.

加味黃連解毒湯 증류액을 이용한 한포진 치험 1례 (A Case of Pompholyx Treated with Wet Dressing by Distilled Solution of Gamihwangryunhaedok-tang(Jiaweihuanglianjiedu-tang))

  • 임진호;지선영;이상곤
    • 한방안이비인후피부과학회지
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    • 제17권2호
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    • pp.127-130
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    • 2004
  • Pompholyx is a special vesicular type of hand and foot dermatitis. It is an acute, chronic or recurrent dermatosis of the fingers, palms and soles, characterized by a sudden onset of many deep-seated pruritic clear vesicles. We diagnosed a patient with pompholyx as damp heat and treated with wet dressing by gauze soaked in distilled solution of Gamihwangryunhaedok-tang(Jiaweihuanglianjiedu-tang). After treatment with wet dressing, we observed the improvement. Based on this study, it is considered that wet dressing with Gamihwangryunhaedok-tang(Jiaweihuanglianjiedu-tang) can be applied to the treatment of pompholyx.

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봄파종을 위한 인삼 종자 저장 적정 온도 연구 (Optimum Storage Temperature for Spring Sowing of Panax ginseng Seeds)

  • 서수정;장인배;장인복;문지원;유진
    • 한국약용작물학회지
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    • 제27권6호
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    • pp.390-396
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    • 2019
  • Background: Usually ginseng seeds are sown during autumn and spring. Sowing in spring often results in poorer seedling establishment than in autumn. One of the reasons for poor germination could be cold-treatment condition for breakage of physiological dormancy during winter. Here we tested the effects of storage temperature used during cold treatment on germination. Methods and Results: Germination properties were observed after dehiscent seeds were stored as wet and dry at 2℃, -2℃, -3.5℃ and alternating temperature (AT). Seed dryness and storage temperature affected germination properties (p < 0.01). Wet and AT condition germinated highest, and wet and -3.5℃ condition germinated lowest, which was 91.2% and 1.4% respectively. Mean germination time (MGT) of the wet and AT condition was faster than other treatments at 2.4 days, and the dry and -2℃ condition was the longest. Germination performance index (GPI) was highest for wet and AT condition (37.7%) and the lowest for wet and -3.5℃ condition (0.5%). The growth of above-ground and below-ground were the best for wet and 2℃ condition, and wet seeds showed better growth than dry seeds (p < 0.01). Conclusions: For cold treatment, ginseng seeds may not be stored below -2℃ for successful germination during spring sowing.